The SILLA40 Upholstered Chair, designed by Isaac Piñeiro of Nadadora, marks Sancal's 40th anniversary with a unique concept. This collection features four distinct backs, each reflecting a pivotal era in furniture design, while maintaining a consistent structure. The R20 back draws inspiration from Marcel Breuer's Cesca chair, while the R30 pays homage to Scandinavian design and Alvar Aalto's 69 chair. The R40 variant celebrates the organic forms of the mid-20th century, reminiscent of Charles Eames' LCW chairs. The R70 embodies postmodern influences, inspired by Ettore Sottsass's Synthesis45. Ideal for dining tables, conference rooms, and cafés, this chair offers durable seating with its laminated ash shell and CMHR foam padding. Available in a variety of ash stains and fabrics, the SILLA40 features solid ash or lacquered steel legs, making it a versatile choice for modern design tables and ergonomic seating needs.